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usnistgov / REFPROP-issues

A repository solely used for reporting issues with NIST REFPROP
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[TPFLSH error 213] #503

Closed emanueleviglianti closed 6 months ago

emanueleviglianti commented 2 years ago

Hi, I've a problem with the calculation of different properties of a gas mixture using the REFPROP 9.1 in Excel.

The mixture is the following, in % mole:

methane | 0.7273 ethane | 0.1016 propane | 0.0391 butane | 0.0111 isobutan | 0.0068 pentane | 0.0032 ipentane | 0.0041 hexane | 0.0030 nitrogen | 0.0050 co2 | 0.0950 heptane | 0.0023 octane | 0.0013 nonane | 0.0003

I need to calculate its density (given temperature and pressure) at 80 bar and 15°C. When I type the command, the following error appears: "#[TPFLSH ERROR 213] liquid density iteration did not converge".

If I perform the same calculation at 52°C (same pressure) it works.

ianhbell commented 2 years ago

Please see: https://github.com/usnistgov/REFPROP-wrappers/issues/106

emanueleviglianti commented 2 years ago

Problem solved. Thank you!